A barcode magnetic nanowire typically comprises a multilayer magnetic structure in a single body with more than one segment type. Interestingly, due to selective functionalization and novel interactions between the layers, it has attracted significant attention, particularly in bioengineering. However, analyzing the magnetic properties at the individual nanowire level remains challenging. Herein, the characterization of a single magnetic nanowire is investigated at room temperature under ambient conditions based on magnetic images obtained via wide-field quantum microscopy with nitrogen-vacancy centers in diamond. Consequently, critical magnetic properties of a single nanowire can be extracted, such as saturation magnetization and coercivity, by comparing the experimental result with that of micromagnetic simulation. This study opens up the possibility for a versatile in situ characterization method suited to individual magnetic nanowires.
Bibliographical noteFunding Information:
The authors acknowledge financial support from the National Research Foundation of Korea (2018M3C7A1024602, 2019R1A2C3006587, and 2021R1F1A1049355). The research related to the heat treatment of single‐crystal diamonds was supported by the Institute for Basic Science (IBS‐R019‐D1).
© 2023 Wiley-VCH GmbH.
- barcode magnetic nanowires
- diamond nitrogen-vacancy center
- wide-field quantum microscopy
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Engineering (miscellaneous)